mirror of
https://github.com/minetest-mods/towercrane.git
synced 2024-11-22 15:23:51 +01:00
399 lines
10 KiB
Lua
399 lines
10 KiB
Lua
--[[
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Tower Crane Mod
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===============
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Copyright (C) 2017-2019 Joachim Stolberg
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LGPLv2.1+
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See LICENSE.txt for more information
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Nodes Meta data
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+--------+
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| | - last_known_pos as "(x,y,z)"
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| switch | - last_used
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| | - running
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+--------+
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+--------+
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| | - owner
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| base | - width
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| | - height
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+--------+ - dir as "(0,0,1)"
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]]--
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-- for lazy programmers
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local P2S = function(pos) if pos then return minetest.pos_to_string(pos) end end
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local S2P = minetest.string_to_pos
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-- crane minimum size
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local MIN_SIZE = 8
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towercrane = {}
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towercrane.S = minetest.get_translator("towercrane")
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local S = towercrane.S
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local MP = minetest.get_modpath("towercrane")
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dofile(MP.."/config.lua")
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dofile(MP.."/control.lua")
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-------------------------------------------------------------------------------
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-- Helper functions
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-------------------------------------------------------------------------------
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local function chat(owner, text)
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if owner ~= nil then
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minetest.chat_send_player(owner, "[Tower Crane] "..text)
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end
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end
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local function formspec(height, width)
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local text = ""
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if height and width then
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text = height..","..width
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end
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return "size[5,4]"..
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"label[0,0;"..S("Construction area size").."]" ..
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"field[1,1.5;3,1;size;height,width;"..text.."]" ..
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"button_exit[1,2;2,1;exit;"..S("Build").."]"
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end
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local function get_node_lvm(pos)
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local node = minetest.get_node_or_nil(pos)
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if node then
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return node
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end
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local vm = minetest.get_voxel_manip()
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local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
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local data = vm:get_data()
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local param2_data = vm:get_param2_data()
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local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
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local idx = area:indexp(pos)
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node = {
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name = minetest.get_name_from_content_id(data[idx]),
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param2 = param2_data[idx]
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}
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return node
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end
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local function turnright(dir)
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local facedir = minetest.dir_to_facedir(dir)
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return minetest.facedir_to_dir((facedir + 1) % 4)
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end
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local function turnleft(dir)
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local facedir = minetest.dir_to_facedir(dir)
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return minetest.facedir_to_dir((facedir + 3) % 4)
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end
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-- pos is the base position
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local function is_crane_running(pos)
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local switch_pos = {x=pos.x, y=pos.y+1, z=pos.z}
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return towercrane.is_crane_running(switch_pos)
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end
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local function get_crane_data(pos)
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local meta = minetest.get_meta(pos)
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local dir = S2P(meta:get_string("dir"))
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local owner = meta:get_string("owner")
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local height = meta:get_int("height")
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local width = meta:get_int("width")
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if dir and height > 0 and width > 0 and owner ~= "" then
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return {dir = dir, height = height, width = width, owner = owner}
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end
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end
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-- generic function for contruction and removement
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local function crane_body_plan(pos, dir, height, width, clbk, tArg)
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pos.y = pos.y + 1
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clbk(pos, "towercrane:mast_ctrl_off", tArg)
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for _ = 1,height+1 do
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pos.y = pos.y + 1
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clbk(pos, "towercrane:mast", tArg)
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end
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pos.y = pos.y - 2
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pos.x = pos.x - dir.x
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pos.z = pos.z - dir.z
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clbk(pos, "towercrane:arm2", tArg)
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pos.x = pos.x - dir.x
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pos.z = pos.z - dir.z
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clbk(pos, "towercrane:arm", tArg)
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pos.x = pos.x - dir.x
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pos.z = pos.z - dir.z
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clbk(pos, "towercrane:balance", tArg)
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pos.x = pos.x + 3 * dir.x
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pos.z = pos.z + 3 * dir.z
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for i = 1,width do
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pos.x = pos.x + dir.x
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pos.z = pos.z + dir.z
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if i % 2 == 0 then
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clbk(pos, "towercrane:arm2", tArg)
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else
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clbk(pos, "towercrane:arm", tArg)
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end
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end
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end
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-- Check space and protection for the crane
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local function check_space(pos, dir, height, width, owner)
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local check = function(pos, node_name, tArg)
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if minetest.get_node(pos).name ~= "air" then
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tArg.res = false
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elseif minetest.is_protected(pos, tArg.owner) then
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tArg.res = false
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end
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end
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local tArg = {res = true, owner = owner}
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crane_body_plan(table.copy(pos), dir, height, width, check, tArg)
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return tArg.res
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end
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local function construct_crane(pos, dir, height, width)
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local add = function(pos, node_name, tArg)
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minetest.add_node(pos, {
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name = node_name,
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param2 = minetest.dir_to_facedir(tArg.dir)})
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end
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local tArg = {dir = dir}
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crane_body_plan(table.copy(pos), dir, height, width, add, tArg)
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end
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local function remove_crane(pos, dir, height, width)
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local remove = function(pos, node_name, tArg)
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local node = get_node_lvm(pos)
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if node.name == node_name or node.name == "towercrane:mast_ctrl_on" then
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minetest.remove_node(pos)
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end
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end
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crane_body_plan(table.copy(pos), dir, height, width, remove, {})
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end
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-- pos is the base position
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local function is_my_crane(pos, player)
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if minetest.check_player_privs(player, "server") then
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return true
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end
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-- check protection
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local player_name = player and player:get_player_name() or ""
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if minetest.is_protected(pos, player_name) then
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return false
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end
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-- check owner
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local meta = minetest.get_meta(pos)
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if not meta or player_name ~= meta:get_string("owner") then
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return false
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end
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return true
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end
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-- Check user input (height, width)
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local function check_input(fields)
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local size = string.split(fields.size, ",")
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if #size == 2 then
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local height = tonumber(size[1])
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local width = tonumber(size[2])
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if height ~= nil and width ~= nil then
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height = math.max(height, MIN_SIZE)
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height = math.min(height, towercrane.max_height)
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width = math.max(width, MIN_SIZE)
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width = math.min(width, towercrane.max_width)
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return height, width
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end
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end
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return 0, 0
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end
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-- pos is the base position
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function towercrane.get_crane_down(pos)
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local data = get_crane_data(pos)
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if data then
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remove_crane(pos, data.dir, data.height, data.width)
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local meta = minetest.get_meta(pos)
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meta:set_string("formspec", formspec(data.height, data.width))
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end
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end
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local function build_crane_up(pos, owner, height, width)
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if height > 0 and width > 0 then
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local meta = minetest.get_meta(pos)
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local dir = S2P(meta:get_string("dir"))
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if dir then
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if check_space(pos, dir, height, width, owner) then
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construct_crane(pos, dir, height, width)
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meta:set_int("height", height)
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meta:set_int("width", width)
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meta:set_string("infotext", S("Owner")..": "..owner..
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", "..S("Crane size")..": "..height..","..width)
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meta:set_string("formspec", formspec(height, width))
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else
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chat(owner, S("Area is protected or too less space for the crane!"))
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end
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end
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else
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chat(owner, S("Invalid input!"))
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end
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end
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-------------------------------------------------------------------------------
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-- Nodes
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-------------------------------------------------------------------------------
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minetest.register_node("towercrane:base", {
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description = S("Tower Crane Base"),
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inventory_image = "towercrane_invent.png",
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tiles = {
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"towercrane_base_top.png",
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"towercrane_base.png",
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"towercrane_base.png",
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"towercrane_base.png",
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"towercrane_base.png",
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"towercrane_base.png",
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},
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paramtype = "light",
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paramtype2 = "facedir",
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sunlight_propagates = true,
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sounds = default.node_sound_metal_defaults(),
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is_ground_content = false,
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groups = {cracky=2},
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-- set meta data (form for crane height and width, dir of the arm)
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after_place_node = function(pos, placer)
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local meta = minetest.get_meta(pos)
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local owner = placer:get_player_name()
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meta:set_string("owner", owner)
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meta:set_string("formspec", formspec())
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local fdir = minetest.dir_to_facedir(placer:get_look_dir(), false)
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local dir = minetest.facedir_to_dir(fdir)
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meta:set_string("dir", P2S(dir))
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end,
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-- evaluate user input (height, width),
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-- destroy old crane and build a new one with
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-- the given size
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on_receive_fields = function(pos, formname, fields, player)
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if fields.size == nil then
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return
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end
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if is_crane_running(pos) then
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return
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end
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if not is_my_crane(pos, player) then
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return
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end
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-- destroy old crane
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towercrane.get_crane_down(pos)
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-- evaluate user input and build new
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local height, width = check_input(fields)
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build_crane_up(pos, player:get_player_name(), height, width)
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end,
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can_dig = function(pos, player)
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if minetest.check_player_privs(player, "server") then
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return true
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end
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if is_crane_running(pos) then
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return false
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end
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if not is_my_crane(pos, player) then
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return false
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end
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return true
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end,
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on_destruct = function(pos)
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towercrane.get_crane_down(pos)
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end,
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})
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minetest.register_node("towercrane:balance", {
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description = S("Tower Crane Balance"),
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tiles = {
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"towercrane_base.png",
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"towercrane_base.png",
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"towercrane_base.png",
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"towercrane_base.png",
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"towercrane_base.png",
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"towercrane_base.png",
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},
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paramtype = "light",
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paramtype2 = "facedir",
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sunlight_propagates = true,
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is_ground_content = false,
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groups = {crumbly=0, not_in_creative_inventory=1},
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})
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minetest.register_node("towercrane:mast", {
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description = S("Tower Crane Mast"),
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drawtype = "glasslike_framed",
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tiles = {
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"towercrane_mast.png",
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"towercrane_mast.png",
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"towercrane_mast.png",
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"towercrane_mast.png",
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"towercrane_mast.png",
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"towercrane_mast.png",
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},
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paramtype = "light",
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paramtype2 = "facedir",
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sunlight_propagates = true,
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is_ground_content = false,
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groups = {crumbly=0, not_in_creative_inventory=1},
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})
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minetest.register_node("towercrane:arm", {
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description = S("Tower Crane Arm"),
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drawtype = "glasslike_framed",
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tiles = {
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"towercrane_arm.png",
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"towercrane_arm.png",
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"towercrane_arm.png",
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"towercrane_arm.png",
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"towercrane_arm.png",
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"towercrane_arm.png",
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},
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paramtype = "light",
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paramtype2 = "facedir",
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sunlight_propagates = true,
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is_ground_content = false,
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groups = {crumbly=0, not_in_creative_inventory=1},
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})
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minetest.register_node("towercrane:arm2", {
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description = S("Tower Crane Arm2"),
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drawtype = "glasslike_framed",
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tiles = {
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"towercrane_arm2.png",
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"towercrane_arm2.png",
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"towercrane_arm2.png",
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"towercrane_arm2.png",
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"towercrane_arm2.png",
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"towercrane_arm2.png",
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},
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paramtype = "light",
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paramtype2 = "facedir",
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sunlight_propagates = true,
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is_ground_content = false,
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groups = {crumbly=0, not_in_creative_inventory=1},
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})
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if towercrane.recipe then
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minetest.register_craft({
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output = "towercrane:base",
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recipe = {
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{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
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{"default:steel_ingot", "", ""},
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{"default:steel_ingot", "dye:yellow", ""}
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}
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})
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end
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-------------------------------------------------------------------------------
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-- export
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-------------------------------------------------------------------------------
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towercrane.turnright = turnright
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towercrane.turnleft = turnleft
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towercrane.is_my_crane = is_my_crane
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towercrane.get_crane_data = get_crane_data
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